Who is Jake Arrieta? A lot of the Chicago Cubs' success has to do with their ace Jake Arrieta, so we thought it was time for a spotlight.

Don’t mention him to Orioles fans. Arrieta started off his career with the Baltimore Orioles where he was a mediocre pitcher at best, so they dumped him off in a trade to the Cubs.

Did he get better? Ohhh boy did he. Last year, Arrieta won the NL Cy Young award (psst—it’s given to the best pitcher in each league), because of his historically good performance. He had a 0.75 ERA in the 2nd half of the season, which was the lowest 2nd half in the history of baseball. (Psst— ERA stands for earned run average. If you need some perspective, an ERA under 3 is considered pretty awesome). He’s known for having a spectacular and wide repertoire of pitches at his command.